<template>
  <w-dialog v-if="pcMode" :border="false" closeFree width="600px" @ok="selectOk" :title="title" v-model="visible">
    <div class="picker" v-if="visible">
      <div class="candidate" v-loading="loading">
        <div v-if="type !== 'role'">
          <el-input
            v-model="search"
            @input="searchUser"
            style="width: 95%"
            size="small"
            clearable
            placeholder="搜索人员，支持拼音、姓名"
            prefix-icon="el-icon-search"
          />
          <div v-show="!showUsers">
            <ellipsis-view hoverTip style="height: 18px; color: #8c8c8c; padding: 5px 0 0" :row="1" :content="deptStackStr">
              <template #pre>
                <i class="el-icon-office-building"></i>
              </template>
            </ellipsis-view>
            <div style="margin-top: 5px">
              <el-checkbox v-model="checkAll" @change="handleCheckAllChange" :disabled="!multiple">全选</el-checkbox>
              <span v-show="deptStack.length > 0" class="top-dept" @click="beforeNode">上一级</span>
            </div>
          </div>
        </div>
        <div class="role-header" v-else>
          <div>系统角色</div>
        </div>
        <div class="org-items" :style="type === 'role' ? 'height: 350px' : ''">
          <el-empty :image-size="100" description="似乎没有数据" v-show="orgs.length === 0" />
          <div v-for="(org, index) in orgs" :key="index" :class="orgItemClass(org)" @click="selectChange(org)">
            <el-checkbox v-model="org.selected" :disabled="disableDept(org)"></el-checkbox>
            <div v-if="org.type === 'dept'">
              <el-icon><FolderOpened /></el-icon>
              <span class="name">{{ org.name }}</span>
              <span @click.stop="nextNode(org)" :class="`next-dept${org.selected ? '-disable' : ''}`">
                <i class="iconfont icon-map-site"></i>下级
              </span>
            </div>
            <div v-else-if="org.type === 'user'">
              <AvatarView :info="org" avatarName="name" urlField="avatar" />
              <span class="name">{{ org.name }}</span>
            </div>
            <div style="display: inline-block" v-else>
              <i class="iconfont icon-bumen"></i>
              <span class="name">{{ org.name }}</span>
            </div>
          </div>
        </div>
      </div>
      <div class="selected">
        <div class="count">
          <span>已选 {{ select.length }} 项</span>
          <span @click="clearSelected">清空</span>
        </div>
        <div class="org-items" style="height: 350px">
          <el-empty :image-size="100" description="请点击左侧列表选择数据" v-show="select.length === 0" />
          <div v-for="(org, index) in select" :key="index" :class="orgItemClass(org)">
            <div v-if="org.type === 'dept'">
              <el-icon><FolderOpened /></el-icon>
              <span style="position: static" class="name">{{ org.name }}</span>
            </div>
            <div v-else-if="org.type === 'user'" style="display: flex; align-items: center">
              <AvatarView :info="org" avatarName="name" urlField="avatar" />
              <span class="name">{{ org.name }}</span>
            </div>
            <div v-else>
              <i class="iconfont icon-bumen"></i>
              <span class="name">{{ org.name }}</span>
            </div>
            <el-icon class="icon-close" @click="noSelected(index)"><Close /></el-icon>
          </div>
        </div>
      </div>
    </div>
  </w-dialog>
</template>

<script setup>
import { computed, ref, getCurrentInstance } from "vue";
import { Close, FolderOpened } from "@element-plus/icons-vue";
import { getOrgTree, getUserByName } from "@/apis/org";
import WDialog from "../WDialog.vue";
import AvatarView from "../AvatarView";

const props = defineProps({
  pcMode: {
    default: true,
    type: Boolean
  },
  title: {
    default: "请选择",
    type: String
  },
  type: {
    default: "org", //org选择部门/人员  user-选人  dept-选部门 role-选角色
    type: String
  },
  multiple: {
    //是否多选
    default: false,
    type: Boolean
  },
  selected: {
    type: Array,
    default: () => []
  }
});
const emit = defineEmits(["ok", "close"]);

const { proxy } = getCurrentInstance();

const visible = ref(false);
const loading = ref(false);
const checkAll = ref(false);
const nowDeptId = ref(null);
const isIndeterminate = ref(false);
const searchUsers = ref([]);
const nodes = ref([]);
const select = ref([]);
const search = ref("");
const deptStack = ref([]);
const popupStyle = ref({
  height: "100%",
  width: "100%",
  background: "#f7f7f9"
});

const deptStackStr = computed(() => {
  return String(deptStack.value.map(v => v.name)).replaceAll(",", " > ");
});
const orgs = computed(() => {
  return !search.value || search.value.trim() === "" ? nodes.value : searchUsers.value;
});
const showUsers = computed(() => {
  return search.value || search.value.trim() !== "";
});

const show = () => {
  visible.value = true;
  setTimeout(() => {
    init();
    getOrgList();
  }, 100);
};
const orgItemClass = org => {
  return {
    "org-item": true,
    "org-dept-item": org.type === "dept",
    "org-user-item": org.type === "user",
    "org-role-item": org.type === "role"
  };
};
const disableDept = node => {
  return props.type === "user" && "dept" === node.type;
};
const getOrgList = () => {
  loading.value = true;
  getOrgTree({
    deptId: nowDeptId.value,
    type: props.type === "org" ? "user" : props.type
  })
    .then(rsp => {
      loading.value = false;
      nodes.value = rsp.data;
      selectToLeft();
    })
    .catch(() => {
      loading.value = false;
      proxy.$modal.msgError("获取数据失败");
    });
};
const getShortName = name => {
  if (name) {
    return name.length > 2 ? name.substring(1, 3) : name;
  }
  return "**";
};
const searchUser = () => {
  let userName = search.value.trim();
  searchUsers.value = [];
  loading.value = true;
  getUserByName({ userName: userName })
    .then(rsp => {
      loading.value = false;
      searchUsers.value = rsp.data || [];
      selectToLeft();
    })
    .catch(() => {
      loading.value = false;
      proxy.$modal.msgError("获取用户信息失败");
    });
};
const selectToLeft = () => {
  let nodesData = search.value.trim() === "" ? nodes.value : searchUsers.value;
  nodesData.forEach(node => {
    for (let i = 0, len = select.value.length; i < len; i++) {
      if (select.value[i].id === node.id) {
        node.selected = true;
        break;
      } else {
        node.selected = false;
      }
    }
  });
};
const selectChange = node => {
  if (node.selected) {
    checkAll.value = false;
    select.value.some((item, i) => {
      if (item.id === node.id) {
        select.value.splice(i, 1);
        return true;
      }
    });
    node.selected = false;
  } else if (!disableDept(node)) {
    node.selected = true;
    let nodesData = search.value.trim() === "" ? nodes.value : searchUsers.value;
    if (!props.multiple) {
      nodesData.forEach(nd => {
        if (node.id !== nd.id) {
          nd.selected = false;
        }
      });
    }
    if (node.type === "dept") {
      if (!props.multiple) {
        select.value = [node];
      } else {
        select.value.unshift(node);
      }
    } else {
      if (!props.multiple) {
        select.value = [node];
      } else {
        select.value.push(node);
      }
    }
  }
};
const noSelected = index => {
  let nodesData = nodes.value;
  for (let f = 0; f < 2; f++) {
    for (let i = 0, len = nodesData.length; i < len; i++) {
      if (nodesData[i].id === select.value[index].id) {
        nodesData[i].selected = false;
        checkAll.value = false;
        break;
      }
    }
    nodesData = searchUsers.value;
  }
  select.value.splice(index, 1);
};
const handleCheckAllChange = () => {
  nodes.value.forEach(node => {
    if (checkAll.value) {
      if (!node.selected && !disableDept(node)) {
        node.selected = true;
        select.value.push(node);
      }
    } else {
      node.selected = false;
      for (let i = 0, len = select.value.length; i < len; i++) {
        if (select.value[i].id === node.id) {
          select.value.splice(i, 1);
          break;
        }
      }
    }
  });
};
const nextNode = node => {
  if (!node.selected) {
    nowDeptId.value = node.id;
    deptStack.value.push(node);
    getOrgList();
  }
};
const beforeNode = () => {
  if (deptStack.value.length === 0) {
    return;
  }
  if (deptStack.value.length < 2) {
    nowDeptId.value = null;
  } else {
    nowDeptId.value = deptStack.value[deptStack.value.length - 2].id;
  }
  deptStack.value.splice(deptStack.value.length - 1, 1);
  getOrgList();
};
const recover = () => {
  select.value = [];
  nodes.value.forEach(nd => (nd.selected = false));
};
const selectOk = () => {
  if (select.value && select.value.length === 0) {
    return proxy.$modal.msgWarning("选择的项为空");
  }
  emit("ok", Object.assign([], select.value));
  visible.value = false;
  recover();
};
const clearSelected = () => {
  proxy.$modal
    .confirm("您确定要清空已选中的项?")
    .then(() => {
      checkAll.value = false;
      recover();
    })
    .catch(() => {});
};
const close = () => {
  emit("close");
  visible.value = false;
  recover();
};
const init = () => {
  checkAll.value = false;
  nowDeptId.value = null;
  nodes.value = [];
  deptStack.value = [];
  select.value = Object.assign([], props.selected);
  selectToLeft();
};

defineExpose({
  show
});
</script>

<style lang="scss" scoped>
$containWidth: 278px;

.candidate,
.selected {
  position: absolute;
  display: inline-block;
  width: $containWidth;
  height: 400px;
  border: 1px solid #e8e8e8;
}

.picker {
  height: 402px;
  position: relative;
  text-align: left;
  .candidate {
    left: 0;
    top: 0;

    .role-header {
      padding: 10px !important;
      margin-bottom: 5px;
      border-bottom: 1px solid #e8e8e8;
    }

    .top-dept {
      margin-left: 20px;
      cursor: pointer;
      color: #38adff;
    }
    .next-dept {
      float: right;
      color: #1989fa;
      cursor: pointer;
    }

    .next-dept-disable {
      float: right;
      color: #8c8c8c;
      cursor: not-allowed;
    }

    & > div:first-child {
      padding: 5px 10px;
    }
  }

  .selected {
    right: 0;
    top: 0;
  }

  .org-items {
    overflow-y: auto;
    height: 310px;

    .icon-close {
      position: absolute;
      right: 5px;
      cursor: pointer;
      font-size: larger;
    }
    .org-dept-item {
      padding: 10px 5px;

      & > div {
        display: inline-block;

        & > span:last-child {
          position: absolute;
          right: 5px;
        }
      }
    }

    .org-role-item {
      display: flex;
      align-items: center;
      padding: 10px 5px;
    }

    .org-user-item {
      display: flex;
      align-items: center;
      padding: 5px 5px;
    }

    :deep(.org-item) {
      margin: 0 5px;
      border-radius: 5px;
      position: relative;

      .el-checkbox {
        margin-right: 10px;
      }

      .name {
        margin-left: 5px;
      }

      &:hover {
        background: #f1f1f1;
      }
    }
  }
}

.selected {
  border-left: none;

  .count {
    width: calc($containWidth - 20px);
    padding: 10px;
    display: inline-block;
    border-bottom: 1px solid #e8e8e8;
    margin-bottom: 5px;
    & > span:nth-child(2) {
      float: right;
      color: #c75450;
      cursor: pointer;
    }
  }
}

:deep(.el-dialog__body) {
  padding: 10px 20px;
}

.disabled {
  cursor: not-allowed !important;
  color: #8c8c8c !important;
}

.mobile-picker {
  :deep(.el-input) {
    border-radius: 10px;
    i {
      font-size: 1.2rem;
    }
    .el-input__inner {
      background: #ecedef;
      border: none;
      border-radius: 5px;
      font-size: 1rem;
    }
  }
  .m-org-item-tab {
    margin-bottom: 10px;
    color: #1989fa;
  }
  .m-org-item {
    color: #303133;
    font-size: 1.1rem !important;
    padding: 15px 15px !important;
    border-bottom: 1px solid #f7f7f9;
    .m-org-item-next {
      cursor: pointer;
      color: #1989fa;
      font-size: 1.1rem;
    }
    .m-org-item-next-disabled {
      cursor: not-allowed;
      color: #c8c8c8;
    }
    i {
      font-size: 1.1rem;
    }
    .to-top {
      cursor: pointer;
      color: #1989fa;
    }
  }
}

::-webkit-scrollbar {
  float: right;
  width: 4px;
  height: 4px;
  background-color: white;
}

::-webkit-scrollbar-thumb {
  border-radius: 16px;
  background-color: #efefef;
}
</style>
